EP0057910B1 - Circuit pour l'alimentation régulée d'un utilisateur - Google Patents

Circuit pour l'alimentation régulée d'un utilisateur Download PDF

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Publication number
EP0057910B1
EP0057910B1 EP82100783A EP82100783A EP0057910B1 EP 0057910 B1 EP0057910 B1 EP 0057910B1 EP 82100783 A EP82100783 A EP 82100783A EP 82100783 A EP82100783 A EP 82100783A EP 0057910 B1 EP0057910 B1 EP 0057910B1
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EP
European Patent Office
Prior art keywords
resistor
transistor
circuit arrangement
secondary winding
capacitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82100783A
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German (de)
English (en)
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EP0057910A2 (fr
EP0057910A3 (en
EP0057910B2 (fr
Inventor
Günther Bergk
Gerhard Schwarz
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Braun GmbH
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Braun GmbH
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Priority claimed from DE3103863A external-priority patent/DE3103863C2/de
Priority claimed from DE19813111432 external-priority patent/DE3111432A1/de
Application filed by Braun GmbH filed Critical Braun GmbH
Priority to AT82100783T priority Critical patent/ATE16064T1/de
Publication of EP0057910A2 publication Critical patent/EP0057910A2/fr
Publication of EP0057910A3 publication Critical patent/EP0057910A3/de
Publication of EP0057910B1 publication Critical patent/EP0057910B1/fr
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S320/00—Electricity: battery or capacitor charging or discharging
    • Y10S320/18—Indicator or display
    • Y10S320/19—Charger status, e.g. voltmeter

Definitions

  • the invention relates to a circuit arrangement for supplying a direct current consumer with constant current from input direct voltage sources of different voltages using a self-oscillating flyback converter.
  • a voltage transformation which can be carried out capacitively or inductively, is required to adapt the small devices or accumulators to the different voltages.
  • a transistor converter circuit is known from DE-A-20 14 377, with the aid of which a charging current for an accumulator and, on the other hand, a higher direct current for driving a motor can be generated from an AC mains voltage.
  • a high-frequency flow converter with a saturable core is provided, which is connected on the primary side to the rectified mains voltage and supplies the desired currents on the secondary side.
  • the known circuit can only be operated at a certain mains voltage, so it does not automatically adapt to different voltages. Since the core of the converter saturates, the efficiency is low and thermal problems arise.
  • the secondary winding of the transformer is connected in series to an RC element and the switching path of a second transistor, the base of the first transistor being connected to the connection of the switching path of the second transistor to the RC element.
  • the flyback converter is controlled in such a way that the current delivered to the consumer is constant over a wide input voltage range.
  • the current flowing in the blocking phase of the flyback converter into the consumer, ie into the accumulator, depends on the energy content of the transformer Beginning of each blocking or pass phase. This circuit ensures that the same energy content is always present in the transformer at the time of switching off.
  • the object of the invention is to provide a circuit arrangement for supplying a direct current consumer from input direct voltage sources of different voltage using a self-oscillating flyback converter with a transformer which supplies a direct current consumer of lower voltage with a constant current even in the event of fluctuations in the direct voltage input.
  • the solution according to the invention ensures that a constant charging current for charging an accumulator is present at strongly fluctuating input voltages or different voltage values at the input of the circuit arrangement.
  • This constant charging current is of particular importance in the case of sensitive nickel-cadmium cells, which can be destroyed at an early stage if the charging currents differ widely.
  • the emitter resistor is connected to a tap of the secondary winding of the transformer.
  • This embodiment proves to be particularly idle-proof, has only a slight heating of the individual components during operation and, without additional expenditure with regard to the components to be used, has a sufficient circuit reserve for the extreme load in the case of deeply discharged batteries.
  • the series connection of a first resistor, a second resistor and a battery to be charged by the circuit arrangement is provided between the emitter of the transistor and the reference potential, the connection of the secondary winding of the transformer facing the reference potential being at the connection point of the two resistors.
  • This embodiment has very good control properties and ensures that even with large operating voltage fluctuations of 90 to 250 volts, only charging current changes of the order of 1 mA occur.
  • FIG. 1 shows a switched parallel to an AC voltage source U N capacitor 1 and a through a limiting resistor 2 with their connections 35, 37 connected also in parallel to the mains voltage source U N rectifier bridge circuit 3 comprising four diodes 31, 32, 33, 34th
  • the connections 36, 38 of this rectifier bridge circuit 3 are connected to a series inductance 11 and a parallel capacitor 12, the connections 36, 38 forming a DC voltage source, in which the connection 38 carries the reference potential for the input and output voltage.
  • the cathode of a diode 13 is connected, the anode of which lies on the anode of a zener diode 14.
  • a capacitor 26 is connected in parallel with the battery 6, the connection point between the battery 6, capacitor 26 and the secondary winding 42 being connected to a switch 8 which can connect a DC motor 7 or the like in parallel with the battery 6.
  • the anode of a diode 27 is connected to the connection point between battery 6 and consumer 7, the cathode of which lies at the connection point between capacitor 19 and secondary winding 42.
  • the connection point between the cathode of the Zener diode 14 and the primary winding 41 is with the collector of a transistor 5, the emitter of which is connected to an emitter resistor 51 and a capacitor 25 and the base of which is connected to the positive pole of a reference voltage source 20.
  • a series circuit comprising a capacitor 21, a resistor 22 and a switch 23 is provided in parallel with the reference voltage source 20, the capacitor 21 being connected to the base of the transistor 5 and the switch 23 being connected to the negative pole of the reference voltage source 20 and the capacitors 25, 26.
  • a resistor 15 is provided between the base and the collector of the transistor 5, which is connected to the primary winding 41 of the transformer 4.
  • the resistor 51 connected to the emitter of the transistor 5 is connected to a tap 43 of the secondary winding 42 of the transformer 4.
  • the circuit arrangement shown in FIG. 2 largely corresponds to the circuit arrangement according to FIG. 1, the same reference numbers denoting the same components, so that a detailed circuit description is dispensed with below.
  • the circuit arrangement according to FIG. 2 differs from the circuit arrangement according to FIG. 1 essentially in that the battery or the accumulator 6, optionally serving as a consumer or as a voltage source, is connected in series with the diode 27, the series connection being parallel to the secondary winding 42 of the transformer 4 Come on.
  • the circuit arrangement according to FIG. 2 does not have the series connection of capacitor 21, resistor 22 and switch 23 connected in parallel with reference voltage source 20, and the capacitor 26 connected in parallel with accumulator 6.
  • FIGS. 1 and 2 can be used for various functions.
  • the switch 8 When the switch 8 is open, they serve as a charging circuit for the battery or the accumulator 6, while when the switch 8 is closed they serve as a switching power supply, for example for a DC motor of an electric shaver.
  • the operation of the arrangement according to FIG. 1 is as follows: after the mains voltage U N , which can fluctuate within a large range, has been suppressed by the capacitor 1, it is fed to the rectifier bridge circuit 3 via the limiting resistor 2 and rectified by the latter. The rectified voltage reaches the actual switched-mode power supply via the series inductance 11 and the parallel capacitor 12.
  • the transistor 5 serving as a controllable semiconductor switch is made conductive via the primary winding 41 of the transformer 4 and the resistor 15 serving as a starting aid, the flashback voltages on the primary winding 41 being limited by the diode 13 and the zener diode 14.
  • the base terminal of transistor 5 is connected by a suitable reference voltage source, e.g. B. a Zener diode or the voltage source 20 is held at a certain voltage potential.
  • a suitable reference voltage source e.g. B. a Zener diode or the voltage source 20 is held at a certain voltage potential.
  • the emitter of the transistor 5 is connected to the positive pole of the battery 6 via the resistor 51 and part of the secondary winding 42, the negative pole of this battery 6 being connected to ground potential.
  • this voltage influences the current flowing into the battery 6 because only such a current can pass from the emitter of the transistor 5 into the battery 6 that the voltage difference between the battery 6 and the emitter of the transistor 5 or the resistance value of the resistor 51 and the lower one Part of the secondary winding 43 corresponds.
  • the regulation of the consumer voltage according to FIG. 1 is determined from the following equation:
  • 1 51 is the current flowing through resistor 51
  • U 20 is voltage the reference voltage source 20
  • U43 the voltage at the lower section of the secondary winding 42 between the tap 43 and the connection of the battery 6
  • U 6 the voltage of the battery 6 and R 5 , the resistance value of the resistor 51.
  • I 51 also represents the current flowing through the resistor 51
  • U 20 the voltage emitted by the reference voltage source 20
  • U BE ( 5 ) the base-emitter voltage of the transistor 5
  • U43 the voltage at the lower section of the secondary winding 42 of the transformer 4
  • R S1 means the resistance value of resistor 51.
  • An increase in the secondary load current or a decrease in the voltage of the battery 6 causes an increase in the secondary power output by the transformer 4.
  • the battery 6 can of course also be a larger capacitor, for. B. the capacitor 26 to be replaced.
  • the base point of the reference voltage source 20 can be connected to the positive pole of the battery 6 according to FIG. 2.
  • the secondary winding 42 also serves as a feedback winding which drives the base of the transistor 5 via the capacitor 19 and the resistor 18.
  • the capacitor 19 and the resistor 18 are used in the blocking phase of the transistor 5 to clear out the charge carriers in the base of this transistor 5 more quickly.
  • the capacitor 25 blocks parasitic vibrations, while the capacitor 26 according to FIG. 1 ensures a better bridging of the switching frequency from the positive pole of the battery 6 to ground.
  • the resistor 22 and the capacitor 21 according to FIG. 1 can be used to switch from a quick charge to a small maintenance current via the switch 23.
  • the resistor 22 is used here only for decoupling.
  • the capacitor 21 forms a capacitive voltage divider with the capacitor 19 at the end of the transformer discharge phase, so that the charging of the capacitor 19 via the resistor 15 begins at a low voltage potential.
  • the positive pole of the battery 6 is not in the emitter circuit of the transistor 5, but to ground.
  • the circuit arrangement behaves in principle in exactly the same way as the circuit arrangement according to FIG. 1.
  • the second exemplary embodiment shown in FIG. 3 likewise shows a capacitor 1 in parallel with the terminals of a mains voltage source U N and a rectifier bridge 3 via a resistor 2, which is connected to the other terminal of the mains voltage source U N with the bridge diagonals 35 to resistor 2 and 37, respectively is.
  • the rectifier bridge circuit 3 has four diodes 31, 32, 33, 34 in a manner known per se.
  • a parallel smoothing capacitor 10 and a smoothing inductor 11 are connected to the other bridge diagonals 36, 38.
  • Another capacitor 12 is connected in parallel with the series connection of the smoothing capacitor 10 with the smoothing inductor 11.
  • the series connection of a first resistor 71 with a Zener diode 70 and two further resistors 56, 57 is provided in parallel with this further capacitor 12. While the anode of the zener diode 70 is connected to the base of a further transistor 72, the cathode of the diode 70 is connected to a capacitor 59 which is connected in series to a parallel connection, in the first branch of which a resistor 60 and in the second branch of which Series connection of a further resistor 61 with a capacitor 62 is included.
  • the entire parallel circuit is connected to a resistor 54, which in turn is connected to the emitter of transistor 5.
  • the emitter is additionally connected to a resistor 52, which is connected to the positive pole of a battery 6.
  • a capacitor 26 and a DC motor 7 are provided in parallel with this battery 22.
  • the connection point between the resistor 52 on the one hand and the battery 6, the capacitor 26 and the DC motor 7 on the other hand is connected to a resistor 65 which is connected in series to two diodes 63, 64 which are polarized in the same direction.
  • This series connection is parallel to the secondary winding 42 of a transformer 4, the primary winding 41 of which is connected on the one hand to the collector of the transistor 5 and on the other hand to the inductor 11.
  • a diode 13 and a Zener diode 14 Parallel to the primary winding 41 are a diode 13 and a Zener diode 14, which is connected in series therewith and has opposite polarity the primary winding 41 connected.
  • the base of transistor 5 can be connected to the negative pole of battery 6 via a capacitor 73, a resistor 74 and a switch 75.
  • This negative pole of the battery 6 is additionally connected via a diode 66 to the cathode of the diode 63, which is advantageously designed as a light-emitting diode.
  • an electrical consumer 7 in the form of a direct current motor is provided via a switch 8.
  • This DC motor 7 can thus either be fed directly from the circuit arrangement described above or from the battery 6.
  • FIG. 4 shows a circuit arrangement which shows a partial area of the circuit arrangement according to FIG. 3, with some changes being made in this partial area. Instead of the two diodes 63, 64 and the resistor 65 in FIG. 3, only one light-emitting diode 55 connected upstream of the resistor 54 is provided in FIG.
  • FIGS. 3 and 4 can be used for various functions.
  • the switch 8 When the switch 8 is open and the switch 75 is closed, they serve as charging circuits for the battery 6, while when the switch 8 is closed they serve as a switching power supply for the consumer 7, which can be, for example, a DC motor of an electric shaver.
  • the transistor 5 is made conductive via the primary winding 41 and the resistor 56 serving as a starting aid, the flashback voltage at the primary winding 41 being limited by the diode 13 and the oppositely polarized zener diode 14.
  • the base connection of the transistor 5 is held at a certain voltage potential by a zener diode 70 serving as a reference voltage source.
  • transistor 5 is connected via resistor 54 to a connection of secondary winding 42 and via resistor 52 to the positive pole of battery 6.
  • the periods in which the voltage across the capacitor 12 is switched through by the transistor 5 are thus influenced not only by the external circuitry of the transistor 5, but also by the voltage on the capacitor 12 and thus by the mains voltage U N , because part this voltage is present at the connection point between the resistor 54 and the secondary winding 42. At the same time, this voltage influences the current flowing into the battery 6, because only such a current can reach the battery 6 from the emitter of the transistor 5 which corresponds to the voltage difference between the battery 6 and the emitter or the resistance value of the resistor 52.
  • the voltage regulation in the circuit arrangement according to FIG. 3 can be represented arithmetically by the current flowing in the emitter resistor 52: where 1 52 contains the current flowing through the resistor 52, U 70 the reference voltage at the zener diode 70, U BES the base-emitter voltage drop at the transistor 5, U BATT6 the voltage of the battery 6 and R 52 the resistance value of the emitter resistor 52.
  • the battery 6 Due to the battery 6 in the emitter circuit of the transistor 5, which serves to supply the DC motor 7, there is the advantage that when the battery voltage rises - for example when the battery 6 is still charged - the emitter current is also reduced, i. H. the charging current flowing into the battery 6 is reduced. An increase in the secondary charging current or a decrease in the voltage of the battery 6 causes an increase in the secondary power output by the transformer 4.
  • the battery 6 can of course also be a larger capacitor, for. B. the capacitor 26 to be replaced.
  • the base point of the reference voltage source 70, 71, 72 can be connected to the positive pole of the battery 6.
  • the secondary winding 42 also serves as a feedback winding which drives the base of the transistor 5 via the network 59, 60, 61, 62.
  • the capacitor 26 ensures a better bridging of the switching frequency from the positive pole of the battery 6 to ground.
  • Resistor 74 and capacitor 73 can be used to switch from rapid charging to a small maintenance current via switch 75.
  • the resistor 74 is used here only for Decoupling.
  • the capacitor 73 forms a capacitive voltage divider with the capacitor 59 of the network when the transformer discharge ends, so that the charging of the capacitor 59 via the resistor 56, 57 already starts from a low voltage potential.
  • U ON USATT + U ⁇
  • the LED 63 lights up in the charging phase of the battery 6, i. H. when a voltage is applied to the secondary winding 42.
  • the resistor 65 acts as a current limit.
  • FIG. 4 shows a circuit arrangement in which the light-emitting diode 55 is in series with the resistor 54.
  • the resistor 54 takes over the function of the current limiter.
  • FIG. 5 shows a circuit arrangement in which a capacitor 1 is connected in parallel with the mains voltage U N , which has one connection directly to a point 37 of a rectifier bridge 3 and another connection via a resistor 2 to the point 35 of the Rectifier bridge 3 is connected.
  • the rectifier bridge 3 has four diodes 31, 32, 33, 34 in a manner known per se.
  • An inductor 11 is connected to point 36 of rectifier bridge 3, while capacitors 10, 12, which are connected to inductor 11, are connected to point 38 of rectifier bridge 3.
  • a resistor 90 and the collector-emitter path of a transistor 72 are located parallel to the capacitor 12, the collector of this transistor 72 being connected to the base of a further transistor 5.
  • a diode 70 and a resistor 71 lie parallel to the collector-emitter path of the transistor 72, the anode of the zener diode 70 being connected to the base of the transistor 72 and the cathode of the diode 70 being connected to the base of the transistor 5.
  • the collector of transistor 5 is connected to primary winding 41 of a transformer 4, which in turn is connected to inductor 11.
  • two diodes 13, 14 are provided, of which the diode 14 is a Zener diode.
  • the emitter of transistor 5 is connected to a capacitor 76 which is connected at one end to the negative pole of a battery 6 and at the other end to a resistor 52, which in turn is connected to a further resistor 53 which is connected to the positive pole of the Battery 6 is connected.
  • the connecting line between the two resistors 52, 53 is connected both to a connection of the secondary winding 42 of the transformer 4 and on the other hand to a connection of a capacitor 100, the latter being connected to the negative pole of the battery 6 with its other connection.
  • a series circuit comprising a resistor 94 and two diodes 95, 96 is provided in parallel with the secondary winding 42 of the transformer 4.
  • the cathode of the second diode 96 like the second connection of the secondary winding 42, is located at one end of a parallel circuit consisting of a resistor 92 and a diode 93, which is connected via a capacitor 91 to the connecting line between the resistor 90 and the collector of the transistor 72 is.
  • connection point between the resistors 52, 53, 94 and the capacitor 100 or the secondary winding 42 is connected to two switch contacts 82, 84 which can be connected to two other switch contacts 83, 85 via a double switch 81.
  • the switch contact 85 is connected to the positive pole of the battery 6, while the switch contact 83 is connected to a terminal of a DC motor 7, the second terminal of which is connected to the negative pole of the battery 6.
  • a capacitor 26 is connected in parallel with the two connections of the direct current motor 7 and has one connection to the switch contact 83 and the other connection to the anode of a diode 97.
  • the cathode of this diode 97 is connected to the secondary winding 42 or to the cathode of the diode 96.
  • the circuit arrangement shown in FIG. 5 differs from the circuit arrangements shown and explained above in that it functions differently in charging mode.
  • This charging operation is shown in the figure, since the DC motor 7 is separated from the energy source by the switch 81.
  • the transformed mains voltage U N is therefore used exclusively for charging the battery 6.
  • the motor 7 is connected in parallel to the battery 6.
  • the different mode of operation of this exemplary embodiment is achieved by connecting the resistor 52 and the resistor 53 in series, the connection point between these two resistors 52, 53 being connected to ground via the capacitor 100. A connection of the secondary winding 42 is also connected to this connection point.
  • the current flowing through the secondary winding 42 generates a voltage at the connection point mentioned, which influences the peak current of the primary winding 41 of the transformer 4, i. H. the output variable of the transformer 4 is fed back to the input. This creates a closed control loop.
  • J B is the current flowing to the battery 6, U, which means the voltage occurring at the series connection of the resistor 53 and the battery 6, U e the battery voltage and R 53 the resistance value of the resistor 53.
  • U z is the voltage drop across the zener diode 70
  • U BE72 is the base-emitter voltage of the transistor 72
  • U Bes is the base-emitter voltage on the transistor 5.
  • J B again means the battery current and J LED95 'is the current flowing through the light-emitting diode 95, namely the mean value of this current.
  • the transfer factor, ie the ratio of primary winding 41 to secondary winding 42 of the transformer 4 is denoted by R Ü while 52 indicates the resistance of the resistor 52nd
  • the voltage drop across resistor 52 is small compared to the voltage drop across resistor 53.
  • the switch-on and switch-off behavior of the transistor 5 is improved by the capacitor 76 and the diode 93.
  • a light-emitting diode can be connected between the emitter and the base of the transistor 5, with the cathode connected to the base of the transistor 5.
  • a diode can be connected in parallel to the collector-emitter path of transistor 72, its cathode being connected to the collector and its anode being connected to the emitter of transistor 72.
  • the light-emitting diode connected between the base and emitter of transistor 5 could serve as an operating display in charging mode.
  • diode 96 and resistor 94 can be omitted.
  • the light-emitting diode mentioned would then light up in motor and charging operation and at the same time serve as a limiting diode for the negative base-emitter voltage during the switching-off process of transistor 5.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Claims (14)

1. Circuit pour l'alimentation d'un récepteur à courant continu (6, 7) par un courant constant provenant de sources de tension continue d'entrée différentes, avec utilisation d'un convertisseur inverse auto-oscillant à transformateur (4), dont l'enroulement primaire (41) est branché entre une borne de la source de tension continue d'entrée et le collecteur d'un transistor (5) monté en série avec une résistance d'émetteur (51 ; 52), et dont l'enroulement secondaire (42) est ramené sur l'électrode de commande du transistor (5) par un élément RC (15-19 ; 59-62 ; 90-92) et relié par une diode (27 ; 66 ; 97) au récepteur (6, 7) et à la seconde borne de la source de tension continue, portée au potentiel de référence des tensions d'entrée et de sortie, ledit circuit étant caractérisé en ce que la branche de courant contenant la résistance d'émetteur (51, 52) entre l'émetteur du transistor (5) et le potentiel de référence est chargée par une partie de la tension apparaissant aux bornes de l'enroulement secondaire (42) du transformateur (4) ; et une tension de référence (20) fixe par rapport au potentiel de référence est appliquée à la base du transistor (5).
2. Circuit selon la revendication 1, caractérisé en ce que la résistance d'émetteur (51) est reliée à une prise (43) de l'enroulement secondaire (42) du transformateur (4) (figures 1 et 2).
3. Circuit selon revendication 1, caractérisé en ce que l'émetteur du transistor (5) est relié par une résistance (54) à la borne de l'enroulement secondaire (42) du transformateur (4) opposée au potentiel de référence.
4. Circuit selon revendication 2, caractérisé en ce que l'émetteur du transistor (5) est relié par un condensateur (25) à la borne négative d'une batterie (6) à charger par le circuit et insérée entre l'enroulement secondaire (42) du transformateur (4) et le potentiel de référence (figure 1).
5. Circuit selon une des revendications 2 ou 3, caractérisé en ce que la base du transistor (5) peut être reliée au potentiel de référence par un condensateur (21, 73), une résistance (22, 74) et un interrupteur (23, 75) (figures 1 à 3).
6. Circuit selon une quelconque des revendications 1 à 5, caractérisé en ce que la borne de l'enroulement secondaire (42) du transformateur (4) opposée au potentiel de référence est reliée à la base du transistor (5) par un condensateur (19) et le montage en parallèle d'une première résistance (18) avec le montage en série d'une seconde résistance (17) et d'un condensateur (16) (figures 1 et 2).
7. Circuit selon revendication 3, caractérisé en ce que l'enroulement secondaire (42) est shunté par le montage en série d'une diode électroluminescente (63), d'une diode (64) et d'une résistance (65) ; et une batterie (6) à charger par le circuit est insérée entre l'enroulement secondaire (42) et le potentiel de référence (figure 3).
8. Circuit selon revendication 3, caractérisé en ce que l'émetteur du transistor (5) est relié à la borne de l'enroulement secondaire (42) du transformateur (4) par une diode électroluminescente (55) en série avec la résistance (54) (figure 4).
9. Circuit selon revendication 1, caractérisé en ce que le montage en série d'une première résistance (52), d'une seconde résistance (53) et d'une batterie (6) à charger par le circuit est inséré entre l'émetteur du transistor (5) et le potentiel de référence ; et la borne de l'enroulement secondaire (42) du transformateur (4) en regard du potentiel de référence est reliée au point de connexion des deux résistances (52, 53) (figure 5).
10. Circuit selon revendication 9, caractérisé par un condensateur (100) dont une borne est reliée à la connexion entre la première (52) et la seconde résistance (53), et dont la seconde borne est reliée au potentiel de référence.
11. Circuit selon revendication 9, caractérisé par un interrupteur (81) permettant de brancher un moteur (7) en parallèle avec la batterie (6).
12. Circuit selon revendication 9, caractérisé en ce que l'enroulement secondaire (42) du transformateur (4) est en parallèle avec le montage en série d'une résistance (94) et de deux diodes (95, 96) polarisées dans le même sens et dont une est une diode électroluminescente (95) et sert d'indicateur de fonctionnement.
13. Circuit selon une quelconque des revendications 9 à 12, caractérisé par le branchement entre la base du transistor (5) et le potentiel de référence du circuit collecteur-émetteur d'un autre transistor (72), dont la base est reliée à la connexion d'une résistance (71) et d'une diode Zener (70), qui sont montées en série entre la base du transistor (5) et le potentiel de référence, la borne de cathode de la diode Zener étant reliée à la base du transistor (5).
14. Circuit selon une quelconque des revendications 9 à 13, caractérisé en ce que le montage en série d'un condensateur (91) et du montage en parallèle d'une diode (93), dont l'anode est reliée au condensateur (91), et d'une résistance (92) est inséré entre la base du transistor (5) et la borne de l'enroulement secondaire (42) du transformateur (4) opposée au potentiel de référence.
EP82100783A 1981-02-05 1982-02-04 Circuit pour l'alimentation régulée d'un utilisateur Expired - Lifetime EP0057910B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82100783T ATE16064T1 (de) 1981-02-05 1982-02-04 Schaltung zur geregelten speisung eines verbrauchers.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3103863A DE3103863C2 (de) 1981-02-05 1981-02-05 Schaltungsanordnung zur Speisung eines Gleichstromverbrauchers mit konstantem Strom aus Eingangsgleichspannungsquellen unterschiedlicher Spannung
DE3103863 1981-02-05
DE3111432 1981-03-24
DE19813111432 DE3111432A1 (de) 1981-03-24 1981-03-24 Schaltungsanordnung zur geregelten speisung eines verbrauchers
DE3144486 1981-11-09
DE3144486 1981-11-09

Publications (4)

Publication Number Publication Date
EP0057910A2 EP0057910A2 (fr) 1982-08-18
EP0057910A3 EP0057910A3 (en) 1983-05-04
EP0057910B1 true EP0057910B1 (fr) 1985-10-09
EP0057910B2 EP0057910B2 (fr) 1992-03-18

Family

ID=27189121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100783A Expired - Lifetime EP0057910B2 (fr) 1981-02-05 1982-02-04 Circuit pour l'alimentation régulée d'un utilisateur

Country Status (3)

Country Link
US (1) US4464619A (fr)
EP (1) EP0057910B2 (fr)
DE (1) DE3266729D1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3218594A1 (de) * 1982-05-17 1983-12-22 Braun Ag, 6000 Frankfurt Elektronisches schaltnetzteil
JPS6059978A (ja) * 1983-09-12 1985-04-06 Toshiba Corp 空気調和機
JPS6289432A (ja) * 1985-10-14 1987-04-23 松下電工株式会社 電源回路
DE3545324A1 (de) * 1985-12-20 1987-06-25 Braun Ag Elektronisches schaltnetzteil
DE3618221C1 (de) * 1986-05-30 1993-02-11 Braun Ag Schaltnetzteil mit einem primaer getakteten Gleichspannungswandler
DE3726123C2 (de) * 1987-08-06 1996-02-22 Moser Gmbh Kuno Schaltung zum Betreiben eines Gleichstromverbrauchers
DE3813063A1 (de) * 1988-04-19 1989-11-02 Heidolph Elektro Gmbh & Co Kg Gleichstrommotor
DE4008663C1 (fr) * 1990-03-17 1991-05-02 Braun Ag, 6000 Frankfurt, De
DE4122544C1 (fr) * 1991-07-08 1992-07-16 Braun Ag, 6000 Frankfurt, De
US5696464A (en) * 1993-10-22 1997-12-09 At&T Global Information Solutions Company Output driver adaptable to power supply variation
CN1056949C (zh) * 1995-11-27 2000-09-27 皇家菲利浦电子有限公司 电源电路
DE69706625T2 (de) * 1996-02-12 2002-06-27 Koninkl Philips Electronics Nv Schaltnetzteil mit kompensation für eingangsspannungsänderung

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
DE1613032A1 (de) * 1967-09-30 1970-12-23 Blaupunkt Werke Gmbh Gleichspannungswandler
US3568038A (en) * 1969-03-28 1971-03-02 Schick Electric Inc Transistor inverter circuit
DE2457664C2 (de) * 1974-12-06 1985-04-04 Robert Bosch Gmbh, 7000 Stuttgart Elektrische Schaltungsanordnung zur Erzeugung einer stabilen Ausgangsspannung
JPS5364745A (en) * 1976-11-20 1978-06-09 Toko Inc Switching power supply
US4155081A (en) * 1977-10-25 1979-05-15 Honeywell Inc. Rechargeable battery backup power source for an ionization smoke detector device
DE2936464A1 (de) * 1979-09-10 1981-03-12 Siemens AG, 1000 Berlin und 8000 München Durchfluss-gleichstromumrichter
EP0030026B2 (fr) * 1979-11-29 1989-01-25 Klaus Becker Agencement de circuit pour l'alimentation stabilisée d'un utilisateur
DE2948054B2 (de) * 1979-11-29 1982-02-04 Klaus Dipl.-Ing. 6239 Eppstein Becker Schaltungsanordnung zur geregelten Speisung eines Verbrauchers
DE2949421A1 (de) * 1979-12-08 1981-07-02 Braun Ag, 6000 Frankfurt Schaltungsanordnung zum laden einer batterie
US4316242A (en) * 1980-09-04 1982-02-16 General Electric Company Wide input range, transient-immune regulated flyback switching power supply
US4376263A (en) * 1980-11-06 1983-03-08 Braun Aktiengesellschaft Battery charging circuit

Also Published As

Publication number Publication date
EP0057910A2 (fr) 1982-08-18
EP0057910A3 (en) 1983-05-04
DE3266729D1 (en) 1985-11-14
US4464619A (en) 1984-08-07
EP0057910B2 (fr) 1992-03-18

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